Improvement in steam-blowers



waited... States gaat can.

`IOHN T. HANCOCK, OF JAMAICA PLAIN, MASSACHUSETTS.

Letters Patent No. 93,197, dated August 3, 1869; 'antedcted July 22, 1869.

The Schedule referred to inthese Letters Patent and making part of the same.

To all whom it may concern:

Beit known that I, J Omv T. HANCOCK, of Jamaica Plain, in the county Of Norfolk, and State of Massachusetts, have invented certain Improvements in Steam-Blowers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being -had to the accompanying drawings, in which are represented a furnace, and the manner Of applying my invention, for'the purpose of a steam-blower to the fire.

The Object of this invention is to prodiicea steamblower which shall give an increased density of blast, an increased quantity of air, and a more perfect mixture of air and steam, with same amount of steam used in other steam-blowers.

My invention consists in the combination of an apparatus for which I applied for Letters Patent, September 17, 1868, and a mixing-chamber. The action and operation of this apparatus are fully and clearly eX- plained in the application referred to, the subject of which application was an apparatus for inducing motion in mobile bodies. l

The construction of this apparatus is as follows:

A is a cylinder.

B, induction-pipe at right angles with A.

C is a concentric tube, smaller than A.

E is a plug, closely fitted into A.

Ou the face of E is annular recess n n.

K is a conical central orifice iu E.

m is a space around C.

n is a continuation of m.

S is a mixing-chamber, situatedin advance of i.

Steam from the boiler passes through B, enters space m, passes around `through recess 'n into e, Where it takes withit air through c le, miges in e d, and the combined air and'l steam is ejected at l, intogngingchamber S, where the force Of combined air and steam, blowing through chamber S from e', takes an additional supply Of air, through space a b, between the n lixing-l chamber S and the apparatus, into S, Wh'ere itcombnes with lthe air and steam. from fi. The result of this is, that a more dense blast, an increased quantity of air, and a more perfect'mixture Of air and steam are ejected into the ash-pit P, under the lires, than are obtained hy an equivalent use of power in other steamblowers. What I claim, therefore, as my invention, and desire .to secure by Letters Patent, is- ,'lheapparatusv described, in combination with mixing-chamber S, as described and specified.

In testimony whereof, I have signedmy name to this specification, in the presence of two subscribing witnesses.

' JOHNA T. HANCOCK.

Witnesses:

JOHN Howan'rn, CARROLL D. WRIGHT. 

